package com.itheima.reggie.controller;

import com.itheima.reggie.common.R;
import org.apache.tomcat.util.http.fileupload.IOUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.util.UUID;

@RestController
@RequestMapping("/common")
public class CommonController {
    @Value("${reggie.path}")
    private String basePath;

    @GetMapping("/download")
    public void download(String name, HttpServletResponse response) throws IOException {

        FileInputStream fileInputStream = new FileInputStream(basePath + name);
        ServletOutputStream outputStream = response.getOutputStream();
        IOUtils.copy(fileInputStream, outputStream);
        fileInputStream.close();
    }


    @PostMapping("/upload")
    public R upload(MultipartFile file, HttpServletResponse response) throws IOException {
        File files = new File(basePath);
        if (!files.exists()) {
            files.mkdirs();
        }
        String originalFilename = file.getOriginalFilename();
        String substring = originalFilename.substring(originalFilename.lastIndexOf("."));
        String fileName = UUID.randomUUID() + substring;
        file.transferTo(new File(basePath + fileName));
        return R.success(fileName);
    }
}
